Abstract: The technique of feeding back current is applied to the reciprocal oseillographie chronopotentiometrie titration. Thus the capacity current can be greatly deducted and the sensibility of titration is enhanced If the feeding back current reciprocal oscillographic chronopotentiomerie curve is treated by differentiation, the sensibility of the titration will be sharply improved,

Key words: feeding back current, reciprocal oscillographic chronopotentiometric titration